Skate-sharpening device



July 30, 1929. P. c. STEVENS SKATE SHARPENING DEVICE lFiled Jan. 3l, 1929 Patented July 30, 1929.

-UNITED Spli PHILIP COLLINS STEVENS, OF SPRINGFIELD, MASSACHUSETTS, .ASSIGNOR TO A. Gr. SPALDING & BROS., OF NEW' YORK, N. Y., A CORPORATION OF NEW JERSEY.

SKATE-SHARPENING DEVICE.

Application filed January 31, 1929. Serial No. 336,549.

My said invention relates to skate sharpening tools or devices of the type yin which a carrier adapted to be grasped by the hand is provided with an abrasive surface and guides whereby it is adapted to be reciprocated along the edge of the blade for sharpening it.

The invention aims to provide va simple and e'icient device for this purpose which can be manufactured at an extremely low cost.

It further aims to provide a device in which emery cloth is used for the abrasive material and one in which the cloth may be readily shifted when worn, to bring a fresh portion or portions of the cloth into position for action on the blade.

With these and other objects in view, the invention includes the novel features of construction and arrangement and combination of parts hereinafter described, the invention being defined by the claims appended hereto.

An embodiment of the invention is illustrated in the accompanying drawing in which:

Figure 1 is a side elevation of the device shown in operating position in connection with the dotted outline of a skate blade.

Fig. 2 is a section on line 2 2 of Fig. l on a larger scale.

Fig. 3 is a detail view showing the several parts separated and in perspective.

Fig. 4 is a plan View of the main carrier ele ment partly in section.

Referring by reference characters to this drawing, the numeral 1 designates a plate member of a thickness approximately that of the skate blade A and having a straight lower edge 1a and outwardly and downwardly curved flanges 1". This member may be conveniently and expeditiously formed from a blank of sheet metal folded upon itself and having the juxtaposed portions between the edge 1a and the flanges 1b brazed or welded together. Preferably the flanges extend slightly beyond the ends of the body portion, as shown. 2 designates the main body of the device which is likewise of sheet metal (of a lighter gage) and which is bent to form a sub stantially cylindrical portion 2a and substantially parallel portions 2b having inwardly deflected lower edge portions 2c firmly held in spaced relation by spacing blocks 2d and rivets 2. A

The cylindrical portion 22L is provided with an elongated slot a to receive the plate member 1 and the emery cloth 3 which is doubled over the edge la of the plate member and extends up the sides thereof. rlhe flanges 1b are curved to correspond to the curvature of' the cylindrical portion 2a and when the plate member has been inserted in the slot, the marginal portions of the emery cloth lie between the inner faces of the curvedfl'anges and the. outer face of the cylindrical part.

For clamping the parts in their assembled condition, I provide a clamp in the form of a split tube 4 of resilient sheet metal, the slit 4a of which corresponds in width to the distance between the external faces of the parallel portions or guides 2b. This clamp is slid endwise onto the assembled parts above referred to and clamps them firmly together. the sleeve constituting the part which is grasped by the hand for reciprocating the device along the blade. During such reciprocation, the portions 2c constitute guides to engage with opposite sides of the skate blade to prevent lateral movement of the device during its rectilinear movement. Skate blades are customarily made somewhat fiar ing or of slightlv dove-tailed shape adjacent the edge of the skate blade or runner and the inward deflection of the guideportions accommodates them to this shape and prevents any lateral rocking motion. The said guides being of spring or'resilient metal can accommodate themselves to slight lnequallties or differences 1n thickness of blades.

With the parts assembled as above de- 'I scribed, the device can be easily manipulated to sharpen skates until the active portion of the emery cloth is too much worn to become effective. To bring a fresh portion into active position. it is only necessary to slide the clamp off, withdraw the plate member, shift the emery cloth and reassemble the v parts.

Having thus described my invention, what I claim is:

1.A skate sharpening device comprising a member having parallel guides and a head provided with a slot alining with the space between said guides, a plate member. a sheet of abrasive material doubled over said plate member, said plate member and sheet being inserted through said slot into the space between said guides` and means detachably engaging said head for holding the parts together.

2. A skate sharpening device comprising a body member having parallel guides and a head provided with a slot alining with the space between said guides, a plate member projecting through said slot into the space between the guides, an abrasive sheet overlying the plate member between the guides, said plate member having flanges overlying the head of the body member, and means for clamping said head and flanges together.

3. A device according to claim 2 in which the body member comprises a single piece of sheet metal bent upon itself to form a head and spaced parallel guide flanges.

.4. A device according to claim 2 in which the body member comprises a sheet metal blank bent to provide a head and spaced parallel guide flanges, the lower edges of the guide flanges being deflected inwardly towards each other.

5. A device according to claim 2 in which the clamping means comprises a split resilient sleeve slidably embracing the head and flanges.

6. A device according to claim 2 in which the head is made of approximately cylindrical shape and the flanges are curved to fit the same, and the clamping means comprises a spllit cylindrical sleeve of resilient sheet meta 7. A device according to claim 2 in which` the plate membercomprises a single sheet of metal folded upon itself and having juxtaposed parts rigidly secured together and out turned marginal parts forming the flanges.

In testimony whereof I aHiX my signature.

PHILIP VCOLLINS STEVENS. 

